Self and oscar w



(No Model.)

A. W. KNITTEL.

VALVE POR OIL WELL BAILBRS. No. 453,488. Patented June 2,1891.

e e @E I 6 ff W/TNESSES: /N VENTOI? r @5,20% MQW/2@ A TTGH/VE YS UNITED STATES PATENT OFFICE..

ANDREV IV. KNITTEL, OF EVANS CITY, PENNSYLVANIA, ASSIGNOR T O HIM- SELF AND OSCAR IV. SI'IOUP, OF SAME PLACE.

VALVE FOR OIL-WELL BAILERS.

SPECIFICATION forming part of Letters Patent No. 453,488, dated June 2, 1891.

Application tiled February 26,1891. Serial No. 382.880. (No model.)

To @ZZ whom, it may concern: fits the valve C. Below the valveseat the Be it known that I, ANDREW NV. KNITTEL, walls of the sleeve are slotted to allow of the 45 of Evans City, in the county of Butler and free admission of oil or water, and above the State of Pennsylvania, have invented a new valve-seat the sleeve is reduced in diameter 5 and Improved Valve for Oil-XVell Ballers, of for a short distance to allow it to pass freely which the following is a specification, referthrough the iillet Z). ence beinghad to the annexed drawings form- To the inner surface of the upper end of 5o ing a part thereof, in whieh the sleeve D are attached the arms CZ (l of the Figure l is alongitudinal section of my imforked rod E. The upwardly-projecting end 1o proved valve, showing it closed. Fig. 2 is a of the said forked rod is provided with barbs longitudinal section taken on a plane at right e e for loosening the sand, which might otherangles to that of Fig. l, showing the valve wise pack in the tube A. The upward move 55 Y open; and Fig. 3 s a plan View of the valve. ment of the sleeve D is limited by the engage- Similar letters of reference indicate correment of the shoulder f with the lower end of I5 spending parts in all the views. the tube A, and its downward movement is The object of my invention is to provide a limited by the engagement of the forked rod r valve for bailers used in oil-wells for reinov- E with the forked rod B. 6o

ing salt-water and oil, which valve will be un- Then the bailer is lowered into the well, affected by the presence of sand. the lower end of the sleeve D strikes the bot- 2o My invention consists in the combination tom of the well and the tube A descends unof an outer tube provided with a valve suptil it strikes the shoulder f of the sleeve. ported by a forked shank secured to the in- This operation opens the valve, when the 65 ner wall of the tube and projecting below the water or oil enters the bailer. Then the lower end thereof, and a sliding sleeve tted bailer is lifted, the sleeve drops and closes the 2 5 to the tube provided with a valve-seat fitted valve.

to the valve and furnished with a forked, Having thus described myinve11tion,lelaim barbed rod or spear, which serves the double as new and desire to secure by Letters Pat- 7o purpose of limiting the movement of the ent-A sleeve and of loosening the sand in the tube, 1. In a valve for oil-well bailers, the combi- 30 all as hereinafter more fully described. nation of the tube A, the forked rod B, valve The tube A, forming the body of my im- C, the sleeve D, having the valve-seat c and proved valve, is designed to be attached to the forked rod E, attached to the sleeve D and 75 the bottom of the oil-well bailer. To the inadapted to engage the forked rod B, substanner surface of the said tube A are secured tially as described.

35 the arms d o of the forked rod B, the lower 2. In a valve for oil-well bailers, thel combiend of which projects below the lower end of nation, with the tube A and sleeve D, of the the tube A and receives the valve C. rod E, attached to the sleeve and provided 8o The lower end of the tube A is provided with barbs e, substantially as described. with a llet b, to which is fitted the upper end 4o of the sleeve D. The lower part of the sleeve ANDREV IV. KNITTEL.

D is of the same diameter as the tube A, and Witnesses: at the middle of the sleeve, where the diame- A. T. SCOTT, ter is reduced, a valve-seat o is formed which E. A. MCCALL. 

